YASKAWA P1000 User Manual

Control power supply wiring is damaged
• Cycle power to the drive. Check if the fault reoccurs.
• If the problem continues, replace the control board, the entire drive, or the control power supply. For
instructions on replacing the control board, contact Yaskawa or a Yaskawa representative.
Internal circuitry is damaged
• Cycle power to the drive. Check if the fault reoccurs.
• If the problem continues, replace either the control board or the entire drive. For instructions on
replacing the control board, contact Yaskawa or a Yaskawa representative.
Digital Operator Display Fault Name
Uv3
Undervoltage 3 (Soft-Charge Bypass Relay Fault)
The soft-charge bypass relay failed.
<1>
Uv4
Gate Drive Board Undervoltage
Voltage drop in the gate drive board circuit
<1> Detected in models 4A0930 and 4A1200.
voF
Output Voltage Detection Fault
Problem detected with the voltage on the output side of the drive.
vToL VT Overload
Cause Possible Solution
The output current of the drive has been
elevated for a set length of time.
The application may not be suited for the drive
• The application may not be suited for the drive
• The drive is undersized for the load
5.2 Fault Detection
YASKAWA ELECTRIC TOEP YAIP1U 01B YASKAWA AC Drive - P1000 Quick Start Guide
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5
Troubleshooting

YASKAWA P1000 Specifications

General

Operating Temperature	-10°C to +50°C (14°F to 122°F)
Cooling Method	Fan Cooled
Output Voltage	0-Input Voltage
Output Frequency	0-400 Hz
Frequency Range	0.1-400 Hz
Power Rating	0.4 kW to 630 kW
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheat, Short Circuit, Ground Fault
Protection Features	Electronic Thermal Overload Protection
Communication	Modbus RTU
Communication Interface	RS-485
Humidity	5% to 95% (non-condensing)
Altitude	Up to 1000m (3280ft) without derating
Enclosure Rating	IP20